Closure for vessels charged with volatile liquids or liquids under pressure.



S. PAULARD 6: N. GRILLET.

CLOSURE FOR VESSELS CHARGED WITHVOLATILE LIQUIDS 0E LIQUIDS UNDER PRESSURE.

APPLICATION FILED DEG. 28,1906.

Patented June 8, 1909.

Altomeyg y in). 924,496,

1 UNITED stra rns sauna: on on I STYLIT PAULAR-D, or PARIS; .AN'D NitrouseuILLEr, or s'r. ro sjNEAR LYON, rumor ASSIGNOBJ'TO SOCIETE-(JHIMIIQUE DES UsINEs DU nonsyor PARIS, FRANCE.

cLosUnn FOR VESSEL-S CHARGED WITH VOLATILE LIQ IDS-on ,Iirourns unzoian 1 PRESSURE.

Specification of Letters Patent Application filed December 28, 1906. Serial I \To. 349,924. I

v Patented J'une 8, 1909.

To all whom it may concern:

Be it known thatwe, S'rYLIT PAULARD, of 54 Rue Secretan, Paris, France, directorgeneral, and NIcoLAs GRILLET, of St. Fons,

near Lyon, France, engineer, have invented certain new and useful Improvements .in Closures for Vessels Charged with Volatile Liquids or Liquids under Pressure, of which charged with ethyl chlorid or like highly volatile liquids employed for producing/local anesthesia and other purpose The chief ob 'ect of the invention is to realize the practical application of an automatic closure to'tubes or vessels having a capillary discharge tube closed by sealing at the blowpipe, and broken off when the vessel 'is to be used. The designation. automatic closure applies to vessels which are automatically closed by apad. or joint of rubber or the like kept presse( by a spring upon the orifice of the capillary tube and adapted to perfectly hermetic joint is provided.

attain this object by making the rubber padbe moved off the orifice by means of a lever or other device 0 erated by one finger of the hand which hol s the vessel. It has not hitherto been ossible to ap ly such a closure in practice to low pipe sealed vessels for the reason that when'the capillary tube of'these latter is broken for use, the surface left by the break is nearly always rough in parts and particularly at the edge. These rough 'or tions, which require special toolsfor tieir removal, render a hermetic joint between the capillary orifice and the spring pressedpad impossible. According; to this invention we overcome this disadvantage and provide a hermetic automatic closure for the capillary tube, so that when this is broken a We of the automatic .closure of conical shape,

the slightly rounded point of the pad beingkept pressed accurately over the capillary orifice, thus avoiding all thorough portions Absolute hermeticity is thus are not sealed .at the blowpipe, because in the improved joint the pressure on the capillary orifice is much stronger, being localized on a restricted surface around the oriiicc.

In the accompanying drawings, Figure 1 is a'vicw in elevation of an -ethyl chlorid tube having a closure in accordance with the invention, Fig. 2 is a corresponding detail sectional view of the upperpart of the tube on a larger scale.

In the drawing ais a metal collar cemented on the neck of the who I) and-to which is pivoted. abnt lever a similar to a flute key and. subject to the action of a spring d; f is the conical rubber pad carried by. the lever c.

When the vessel is in use the spring d presses the pad down over the top of the tu e and closes the capillary, orifice e. It will be seen that'the smaller end of the pad is kept accurately pressed over the capillarv orifice c and does not come in contact with the rim portions of the top of the neck where a-rough surface'is liable to be left when the capillary tube is broken off, whereas the pad is compressed and its pressure concentrated on the flat' ortions surrounding the capillary orifice, so t at a hermetic closure is insured.

By depressing the lever andinverting the tube the jet of anesthetic is applied in the ordinary way.

It is evident that the .im roved closure may also. be a plied to bfbwpip'e sealed vessels provided with non-automatic closures. For example itmay be applied to vessels closed with a screw cap.

What we claim and desire to secure by Letters Patent is:

1. In a closure for vessels, a: discharge tube having a capillary discharge passage extending therethrough, the' end of said tube presenting a surface produced by fracture resulting from-a rotrudingend of. said tube ha ing been bro en off; a conical pad of yieldable material the a 'exwhereof is of less diameter than the'en tube having a, capillary discharge passage 1 extending therethroug'h, the end of said tube 3 presenting a surface produced by fracture 1 resulting from a rotruding end of said tube 1 having been bro en off; a conical pad of yield-able material the apex whereof is of less l diameter than the end of said discharge tube, and which apex is disposed o posite i the discharge end of said passage, whereby said pad upon being forced into contact with l the end of said tube will beflattened but l will not enter said discharge passage because oi. the minute diameter thereof; a pivotally 1 supported lever one end whereof sup )orts said pad and the other end of which 'orms 5 an operating means for the closure; and a spring engaging said lever and serving to maintain the closure in its closed condition.

In witness whereof, we have hereunto signed our names in the presence of two sub- 2 scribing Witnesses. i

\"lYLI'l 'PA ULARD. NICOLAS GRILLET.

Witnesses:

'lnos. Bnowmc. MARIN V-wnom. 

